NO. 7.] 



HORIZONTAL INTENSITY. 



97 



m 

 p in in r^ 



o 



in ^i o o 



o ^ ja 03 



oo 



"3 



CO 

 00 



5, 







jg 







S5 2 



gi 



ay*?? 



p p t ip 



i ^? CO SI CiD 



luQ *-( ift 

 o 





u s 



r i 



CO 



q o 



oo 



o 6s 



0-7 



9-9 



do 



8-12515 



do 



do 



8- 



S 



00 



a 



B< 

 fe 



s 



00 

 4) 



e 



3 



CO 

 00 



8-83712 



s 



C5 cp O O 



sq >n 



do 







o ds do 



o 







o 

 25 



w 

 u 



3 



CO 



CO 



2 CO 

 o o 



8 S 



ib in m 



, i i 1 



i? *, 



do 



co <p 



CO O 



(S 

 CD o 



A, 



a ^ 



Pis 



o o do 



do 





s 



=8 



J 



hi 



be 



bo 

 o 



o 



a 



V 



o 



en 



13 



